Table 2 Associations between current night shift work and the risk of incident COPD (n = 277,059)

Case/all subjects

4984/229,478

1177/37,057

397/10,524

Model 1

1 [reference]

1.48 (1.38, 1.57)

1.75 (1.58, 1.94)

 < 0.001

Model 2

1 [reference]

1.60 (1.50, 1.70)

2.02 (1.82, 2.24)

 < 0.001

Model 3

1 [reference]

1.29 (1.21, 1.37)

1.47 (1.32, 1.63)

 < 0.001

Model 4

1 [reference]

1.28 (1.20, 1.37)

1.49 (1.35, 1.66)

 < 0.001